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dc.contributor.authorShandera, Sarah
dc.contributor.authorAgarwal, Nishant
dc.contributor.authorKamal, Archana
dc.date.accessioned2018-11-14T14:42:39Z
dc.date.available2018-11-14T14:42:39Z
dc.date.issued2018-10
dc.date.submitted2017-10
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.urihttp://hdl.handle.net/1721.1/118996
dc.description.abstractWe derive the evolution equation for the density matrix of a UV- and IR- limited band of comoving momentum modes of the canonically normalized scalar degree of freedom in two examples of nearly de Sitter universes. Including the effects of a cubic interaction term from the gravitational action and tracing out a set of longer wavelength modes, we find that the evolution of the system is non-Hamiltonian and non-Markovian. We find linear dissipation terms for a few modes with wavelength near the boundary between system and bath, and nonlinear dissipation terms for all modes. The non-Hamiltonian terms in the evolution equation persist to late times when the scalar field dynamics is such that the curvature perturbation continues to evolve on super-Hubble scales.en_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevD.98.083535en_US
dc.rightsCreative Commons Attributionen_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0en_US
dc.sourceAmerican Physical Societyen_US
dc.titleOpen quantum cosmological systemen_US
dc.typeArticleen_US
dc.identifier.citationShandera, Sarah, et al. “Open Quantum Cosmological System.” Physical Review D, vol. 98, no. 8, Oct. 2018. © 2018 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Research Laboratory of Electronicsen_US
dc.contributor.mitauthorKamal, Archana
dc.relation.journalPhysical Review Den_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2018-10-29T18:00:13Z
dc.language.rfc3066en
dspace.orderedauthorsShandera, Sarah; Agarwal, Nishant; Kamal, Archanaen_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0001-5430-9837
mit.licensePUBLISHER_CCen_US


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